gi_load.js interacts with the DOM

[erkyrath]

The intent of Quixe is that it should work as a module, delegating all DOM manipulation to glkote.js.

However, there are places in gi_load.js where this breaks down.

• The absolutize() function relies on a DOM trick.
• unpack_blorb() uses jQuery to decode HTML text data (the metadata chunk) into a dict.
• unpack_blorb() uses jQuery in various ways to get JS code loaded.

All of these should have alternatives when running, e.g., as a Node module.

[curiousdannii]

The URL api will help with the first, it's a global in both browsers and Node. Actually also for making URLs for images - using blobs should make it basically as efficient as external files.

I've actually wondered if the blorb/image stuff could be moved to the GlkOte repo. Any GlkOte+RemGlk type setup will need it, but it won't need the load code.

[erkyrath]

Used the URL api for absolutize(), as noted.